Metal Film Resistors - Through Hole

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USF300 Ultra-Stable Low TC Film Resistors

Caddock USF300 Ultra-Stable Low TC Film Resistors were developed for high-performance analog electronics. Utilizing Caddock proprietary resistance film systems, the Type USF300 resistors provide the lowest TC with a wide resistance range and high voltage ratings.The 300 series boasts a resistance range of 50Ω to 25MΩ with temperature coefficients from -40°C to +85°C (referenced to +25°C), and Zero Nominal TC (maximum absolute TC 5ppm/°C). The resistors' tolerance is ±0.01% or ±0.10%. The USF resistors are constructed with an aluminum oxide ceramic sandwich that provides great thermal conductivity and minimizes the power coefficient drift.

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Part #

Metal Film Resistors - Through Hole

USF371-20.0M-0.1%-5PPM
Caddock
1: S/164.93
300In Stock

Mfr. Part #
USF371-20.0M-0.1%-5PPM

Mouser Part #
684-USF371-20M1%5PPM

Caddock

Metal Film Resistors - Through Hole

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Datasheet

300In Stock

S/164.93

S/125.34

S/113.04

S/111.64

View

Min.: 1
Mult.: 1

USF300

20 MOhms

750 mW (3/4 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

2.5 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 100K ohm 0.01% 5ppm

USF340-100K-0.01%-5PPM
Caddock
1: S/76.10
150In Stock

Mfr. Part #
USF340-100K-0.01%-5PPM

Mouser Part #
684-USF340-100K

Caddock

Metal Film Resistors - Through Hole 100K ohm 0.01% 5ppm

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Datasheet

150In Stock

S/76.10

S/64.58

S/61.93

S/60.37

View

Min.: 1
Mult.: 1

USF300

100 kOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-20.0M-0.1%-5PPM
Caddock
1: S/68.78
183In Stock

Mfr. Part #
USF340-20.0M-0.1%-5PPM

Mouser Part #
684-USF340-20M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

183In Stock

S/68.78

S/57.96

S/55.51

S/54.03

View

Min.: 1
Mult.: 1

USF300

20 MOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-20.0M-0.01%-5PPM
Caddock
1: S/153.05
112In Stock

Mfr. Part #
USF340-20.0M-0.01%-5PPM

Mouser Part #
684-USF34020.0M.01%5

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

112In Stock

S/153.05

S/117.32

S/105.37

S/104.05

View

Min.: 1
Mult.: 1

USF300

20 MOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-500K-0.01%-5PPM
Caddock
1: S/80.65
155In Stock

Mfr. Part #
USF340-500K-0.01%-5PPM

Mouser Part #
684-USF340500K0.01%5

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

155In Stock

S/80.65

S/68.47

S/65.63

S/63.99

View

Min.: 1
Mult.: 1

USF300

500 kOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 5M ohm 0.01% 5ppm

USF370-5.00M-0.01%-5ppm
Caddock
1: S/218.60
67In Stock

Mfr. Part #
USF370-5.00M-0.01%-5ppm

Mouser Part #
684-USF370-5M

Caddock

Metal Film Resistors - Through Hole 5M ohm 0.01% 5ppm

Learn More

Datasheet

67In Stock

S/218.60

S/178.04

S/170.22

S/164.38

View

Min.: 1
Mult.: 1

USF300

5 MOhms

750 mW (3/4 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

1.4 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 20M ohm 0.01% 5ppm

USF371-20.0M-0.01%-5ppm
Caddock
1: S/265.12
37In Stock

Mfr. Part #
USF371-20.0M-0.01%-5ppm

Mouser Part #
684-USF371-20M

Caddock

Metal Film Resistors - Through Hole 20M ohm 0.01% 5ppm

Learn More

Datasheet

37In Stock

S/265.12

S/203.27

S/186.41

S/173.92

View

Min.: 1
Mult.: 1

USF300

20 MOhms

750 mW (3/4 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

2.5 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF371-25.0M-0.1%-5PPM
Caddock
1: S/119.73
345In Stock

Mfr. Part #
USF371-25.0M-0.1%-5PPM

Mouser Part #
684-USF371-25M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

345In Stock

S/119.73

S/104.47

S/100.93

S/98.87

View

Min.: 1
Mult.: 1

USF300

25 MOhms

750 mW (3/4 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

2.5 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-100K-0.1%-5PPM
Caddock
1: S/45.62
50In Stock

Mfr. Part #
USF340-100K-0.1%-5PPM

Mouser Part #
684-USF340-100K15PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

50In Stock

S/45.62

S/37.37

S/35.50

S/34.33

View

Min.: 1
Mult.: 1

USF300

100 kOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 10K ohm 0.01% 5ppm

USF340-10.0K-0.01%-5ppm
Caddock
1: S/69.05
44In Stock
100Expected 1/25/2027

Mfr. Part #
USF340-10.0K-0.01%-5ppm

Mouser Part #
684-USF340-10K

Caddock

Metal Film Resistors - Through Hole 10K ohm 0.01% 5ppm

Learn More

Datasheet

44In Stock

100Expected 1/25/2027

S/69.05

S/58.19

S/55.70

S/54.22

View

Min.: 1
Mult.: 1

USF300

10 kOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-1.00M-0.1%-5PPM
Caddock
1: S/88.83
2In Stock
50Expected 1/4/2027

Mfr. Part #
USF340-1.00M-0.1%-5PPM

Mouser Part #
684-USF340-1M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

2In Stock

50Expected 1/4/2027

S/88.83

S/55.47

S/53.05

S/51.58

View

Min.: 1
Mult.: 1

USF300

1 MOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-20.0K-0.1%-5PPM
Caddock
1: S/40.40
42In Stock

Mfr. Part #
USF340-20.0K-0.1%-5PPM

Mouser Part #
684-USF340-20K1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

42In Stock

S/40.40

S/32.89

S/31.18

S/30.13

View

Min.: 1
Mult.: 1

USF300

20 kOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-500K-0.1%-5PPM
Caddock
1: S/47.06
50In Stock

Mfr. Part #
USF340-500K-0.1%-5PPM

Mouser Part #
684-USF340-500K15PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

50In Stock

S/47.06

S/38.57

S/36.63

S/35.46

View

Min.: 1
Mult.: 1

USF300

500 kOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-50.0K-0.1%-5PPM
Caddock
1: S/42.86
11In Stock

Mfr. Part #
USF340-50.0K-0.1%-5PPM

Mouser Part #
684-USF340-50K1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

11In Stock

S/42.86

S/34.88

S/33.05

S/31.92

View

Min.: 1
Mult.: 1

USF300

50 kOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-5.00M-0.1%-5PPM
Caddock
1: S/65.98
38In Stock
50Expected 10/14/2026

Mfr. Part #
USF340-5.00M-0.1%-5PPM

Mouser Part #
684-USF340-5M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

38In Stock

50Expected 10/14/2026

S/65.98

S/55.47

S/53.05

S/51.58

View

Min.: 1
Mult.: 1

USF300

5 MOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-2.00M-0.01%-5ppm
Caddock
1: S/107.71
30In Stock

Mfr. Part #
USF340-2.00M-0.01%-5ppm

Mouser Part #
684-USF3402.00M.01%5

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

30In Stock

S/107.71

S/93.42

S/90.11

S/88.17

View

Min.: 1
Mult.: 1

USF300

2 MOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-20.0K-0.01%-5PPM
Caddock
1: S/69.05
23In Stock

Mfr. Part #
USF340-20.0K-0.01%-5PPM

Mouser Part #
684-USF34020.0K.01%5

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

23In Stock

S/69.05

S/58.19

S/55.70

S/54.22

View

Min.: 1
Mult.: 1

USF300

20 kOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-200K-0.01%-5PPM
Caddock
1: S/76.10
24In Stock
50Expected 1/4/2027

Mfr. Part #
USF340-200K-0.01%-5PPM

Mouser Part #
684-USF340200K0.01%5

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

24In Stock

50Expected 1/4/2027

S/76.10

S/64.58

S/61.93

S/60.37

View

Min.: 1
Mult.: 1

USF300

200 kOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-50.0K-0.01%-5PPM
Caddock
1: S/69.05
46In Stock

Mfr. Part #
USF340-50.0K-0.01%-5PPM

Mouser Part #
684-USF34050.0K.01%5

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

46In Stock

S/69.05

S/58.19

S/55.70

S/54.22

View

Min.: 1
Mult.: 1

USF300

50 kOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 1M ohm 0.01% 5ppm

USF370-1.00M-0.01%-5ppm
Caddock
1: S/140.91
20In Stock
150On Order

Mfr. Part #
USF370-1.00M-0.01%-5ppm

Mouser Part #
684-USF370-1M

Caddock

Metal Film Resistors - Through Hole 1M ohm 0.01% 5ppm

Learn More

Datasheet

20In Stock

150On Order

S/140.91

S/124.05

S/120.16

S/117.86

View

Min.: 1
Mult.: 1

USF300

1 MOhms

750 mW (3/4 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

1.4 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF370-1.00M-0.1%-5PPM
Caddock
1: S/85.75
2In Stock
50Expected 10/9/2026

Mfr. Part #
USF370-1.00M-0.1%-5PPM

Mouser Part #
684-USF370-1M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

2In Stock

50Expected 10/9/2026

S/85.75

S/73.33

S/70.49

S/68.78

View

Min.: 1
Mult.: 1

USF300

1 MOhms

750 mW (3/4 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

1.4 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 10M ohm 0.01% 5ppm

USF340-10.0M-0.01%-5ppm
Caddock
1: S/119.19
348Expected 11/23/2026

Mfr. Part #
USF340-10.0M-0.01%-5ppm

Mouser Part #
684-USF340-10M

Caddock

Metal Film Resistors - Through Hole 10M ohm 0.01% 5ppm

Learn More

Datasheet

348Expected 11/23/2026

S/119.19

S/103.62

S/100.04

S/97.94

View

Min.: 1
Mult.: 1

USF300

10 MOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF340-10.0M-0.1%-5PPM
Caddock
1: S/70.03
430On Order

Mfr. Part #
USF340-10.0M-0.1%-5PPM

Mouser Part #
684-USF340-10M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

430On Order

S/70.03

S/59.09

S/56.56

S/55.08

View

Min.: 1
Mult.: 1

USF300

10 MOhms

330 mW (1/3 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole 1M ohm 0.01% 5ppm

USF340-1.00M-0.01%-5ppm
Caddock
1: S/107.71
138On Order

Mfr. Part #
USF340-1.00M-0.01%-5ppm

Mouser Part #
684-USF340-1M

Caddock

Metal Film Resistors - Through Hole 1M ohm 0.01% 5ppm

Learn More

Datasheet

138On Order

S/107.71

S/93.42

S/90.11

S/88.17

View

Min.: 1
Mult.: 1

USF300

1 MOhms

330 mW (1/3 W)

0.01 %

5 PPM / C

- 40 C

+ 85 C

300 V

19.05 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

Metal Film Resistors - Through Hole

USF370-10.0M-0.1%-5PPM
Caddock
1: S/115.06
440On Order

Mfr. Part #
USF370-10.0M-0.1%-5PPM

Mouser Part #
684-USF370-10M1%5PPM

Caddock

Metal Film Resistors - Through Hole

Learn More

Datasheet

440On Order

S/115.06

S/100.15

S/96.73

S/94.70

View

Min.: 1
Mult.: 1

USF300

10 MOhms

750 mW (3/4 W)

0.1 %

5 PPM / C

- 40 C

+ 85 C

1.4 kV

38.1 mm

Radial

Bulk

Metal Film Precision Resistors

Zero Nominal TC

USF300 Ultra-Stable Low TC Film Resistors

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